Reference Materials by
Material Form
Find Reference Materials (RM), Certified Reference Materials (CRM), calibration standards and analytical standards based on physical form — including solid CRMs, liquid standards, powders, discs, pellets, organic standards and calibration solutions.
Find standards around
the form you actually use.
Select the material form that best fits your analytical workflow to explore relevant RM, CRM, calibration standards and supporting manufacturers.
Solid CRM
Solid Certified Reference Materials for ores, soils, alloys, cement, ceramics, geological materials and other matrix-sensitive applications.
Related ManufacturersLiquid Standards
Liquid calibration and reference standards for ICP, ICP-MS, AA, elemental analysis, verification and routine quality-control workflows.
Related ManufacturersPowder CRM
Powder reference materials for geological samples, mining CRM, XRF pressed-pellet preparation, fusion workflows and material characterization.
Related ManufacturersDisc / Pellet CRM
Disc and pellet reference materials for XRF, OES, metals, alloy verification, foundry applications and routine production quality control.
Related ManufacturersOrganic Standards
Organic analytical standards for GC, GC-MS, HPLC, LC-MS, pesticides, residues, contaminants and other organic-compound applications.
Related ManufacturersCalibration Solutions
Calibration solutions for pH, conductivity, ICP, AA, ion analysis and routine laboratory calibration and verification activities.
Related ManufacturersThe same analyte can require a different standard depending on physical form.
Material form affects preparation, calibration, matrix matching and how closely the reference material represents the actual analytical workflow.
Instrument techniques require different standard formats.
ICP and AA commonly use liquid standards, while XRF and OES often require solid, powder, pellet or disc materials.
Physical form is part of matrix matching.
A solution standard and a solid CRM can contain the same analyte but behave differently in the measurement system.
Preparation route determines how the standard is introduced.
Digestion, dilution, fusion, grinding and pressed-pellet workflows influence which material form is suitable.
Calibration, validation and QC may need different forms.
The intended analytical purpose affects the required certificate, traceability, uncertainty and material format.
Material form is one part of the selection — not the final answer.
After the required physical form is known, the final selection should still consider sample matrix, analyte, concentration range, analytical technique, method and quality objective.
Solid, liquid, powder, pellet, disc, organic solution or another required format.
Ore, metal, soil, water, petroleum, food, cement or another real sample type.
Element, compound, contaminant, residue, nutrient or another analytical target.
ICP, ICP-MS, XRF, OES, AA, GC, HPLC or another measurement technique.
ASTM, ISO, EPA, USP, AOAC, internal method and the associated preparation workflow.
Calibration, validation, QC, verification, proficiency testing or audit support.
Frequently asked questions about
reference materials by material form.
Material-form selection helps narrow the search, but final suitability still depends on the complete analytical requirement.
Why is material form important when selecting a reference material?
The physical form affects sample preparation, calibration behavior, matrix matching and whether the standard can be used directly with the analytical technique.
Can a liquid standard replace a solid CRM?
Not automatically. A liquid standard may be suitable for solution-based techniques such as ICP or AA, while solid-matrix techniques such as XRF or OES can require solid or matrix-matched reference materials.
What form is commonly used for XRF calibration?
Depending on the application, XRF may use solid CRMs, powders, pressed pellets, fused materials or discs that represent the actual matrix and calibration strategy.
What if I cannot find the required material form?
Alpha Prime Lab can help search alternative manufacturers and, where appropriate, evaluate matrix-matched or custom-reference-material options.
Tell us which form you need and what you need to measure.
Send us your required material form, sample matrix, target analytes, concentration range, analytical method, instrument technique and quality objective. Alpha Prime Lab can help identify suitable Reference Materials, CRM, calibration standards or custom standards for your workflow.